and it may soon be possible to build permanent magnets as strong as neodymium magnets, but without any rare earth metals. In fact, the only thing needed to make them is iron and nitrogen ...
The world's strongest permanent magnets made of neodymium measure around 1.4‑1.6 teslas. Niron’s Clean Earth iron nitride permanent magnets peg the meter at 2.4 teslas. Niron Clean Earth ...
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